| 摘要 |
<p>A light emitter (8) and a light receiver (9) are provided to a left-side surface (4A) of a lever (4). When a user grasps the lever (4) with the left hand (LH), the light emitter (8) and the light receiver (9) are positioned at sites in the vicinity of the base of the middle finger (F3), the ring finger (F4), and the little finger (F5), as measurement sites (S) for the palm (P). A blood flow impedance reduction unit (18) projected farther out than the periphery is provided to the left-side surface (4A) of the lever (4). A step is formed in the periphery of the blood flow impedance reduction unit (18). The blood flow impedance reduction unit (18) is in contact with a site between the thumb (F1) and the index finger (F2) and middle finger (F3), as contact sites (C) of the palm (P).</p> |
